baber/WOPTO huggingface dataset:
Patent GB-447742-A (GB)
Title: Improvements relating to photographic cameras
IPC: G03B13/20
Filed: 1934-08-23
Abstract: 447,742. Photographic cameras. FRANKE, P., 32c, Wolfenbuttlerstrasse, and HEIDECKE, R., 7, Seesenstrasse, both in Brunswick, Germany. Aug. 23, 1934, No. 24341. Void [Abridged as open to inspection under Sect. 91 of the Acts, Feb. 27, 1935]. [Class 98 (i)] A camera is provided with a detachable and foldable hood comprising a frame with hinged walls mounted above the view finder screen. In one form, Fig. 1, the frame h comprising a front wall p and side walls b, is secured to the camera top by means of grooves i which slide on bars k fixed to the camera, a spring catch securing it in position. A magnifying lens c is hinged inside the front wall which acts also as a cover when the hood is folded. A modification with a taller hood is also described. In a further modification, Fig. 5, one of the side walls of the hood e has a window closed by a hinged shutter r, and a mirror f, hinged at the base of the hood, enables a reflection of the image of the view finder screen to be viewed through the side window. Alternatively, the mirror f may be hinged at the front of the hood and permit viewing from the rear in a horizontal direction.
Patent GB-873036-A (GB)
Title: Improvements in or relating to processes for recovering useful products from gas dusts
IPC: B03C1/00
Filed: 1959-07-15
Abstract: 873,036. Magnetic separation. ATELIERS DE CONSTRUCTION DE LA BASSE SAMBRE. July 15, 1959 [July 15, 1958], No. 24391/59. Class 117  In recovering magnetic meterial, e.g. magnetite, contained in the solids present in industrial gases, the solids are passed in turn through a disintegrator, a first magnetic separator, means for grinding the magnetic fraction output from the first magnetic separator, and a second magnetic separator for receiving the output from the grinding means. In Fig. 1, the solids to be treated are passed from a disintegrator 1 to a primary magnetic separator 2 from which the magnetic fraction passes through a demagnetizing coil 3 before being subjected to grinding 4 and passing through a further magnetic separator 5. In a wet-treatment system, Fig 2, the starting material is mixed with water at 10 and the magnetic fraction from the primary magnetic separator 2 passes through a grader 12. The fine constituents pass into the magnetic separator 5 and the remaining material passes through a grinder 15 before further grading. The magnetic material in suspension from the separator 5 is discharged direct at 17 or is filtered at 19 prior to drying The non- magnetic fractions from the magnetic separators are discharged at 9.
Patent GB-880288-A (GB)
Title: Improvements in or relating to electrical resistors
IPC: H01C1/036
Filed: 1958-07-29
Abstract: 880,288. Wire-wound resistors. SOC. ELETTROTECNICA CHIMICA ITALIANA, and CANEGALLO, G. July 29, 1958 [Aug. 1, 1957], No. 24449/58. Class 37. In a helically wound resistor, successive turns are separated by at least one insulating cord or the like, wound helically on the support so that successive insulating turns are also separated by a conductive turn. As shown, a solid or tubular former S is wound with a helix M of constantan or nickel-chrome wire, interwound with an insulating helix I of cotton, silk or of fibres of glass, quartz or asbestos. The insulating helix I may take the form of thread, braid, tape or a plait. The ceramic former S may be pre-formed by winding with glass-fibre thread I which is superficially fused to the former by firing. The insulating helix I may be wound with a double thread disposed as shown in Figs. 4, 5. The resistor may be protected with a fired coating of enamel, glaze or ceramic material. Alternatively, a coating of varnish, thermoplastic or thermosetting synthetic resin may be applied. Variable resistors.-A strip of protective material may be removed from a rectilinear or toroidal resistor to allow a sliding contact to engage the resistive helix M. Reference has been directed by the Comptroller to Specification 823,920.
Patent GB-998863-A (GB)
Title: Improvements in or relating to variable speed transmission devices
IPC: F16H61/662
Filed: 1962-06-26
Abstract: 998,863. Variable speed friction gearing. ROLLER GEAR Ltd. June 26, 1962 [Sept. 25, 1961], No. 24486/62. Heading F2D. A variable-speed friction gear has means for automatically maintaining the drive pressure between the elements at the minimum value for substantially non-slip drive. A pair of input races 52, 54, having relative axial movement with each other and with the input shaft 26, are drivingly connected to a pair of output races 56, 58, coupled to the output shaft 28, by balls 50 restrained against planetary motion by rollers 70 on a stationary member 76. Fluid pressure for relative movement of the races 52, 54 to change the transmission ratio is generated by a reciprocating ball pump 100 having a cylinder member 112, driven by a pin 128 fast in the outer race hub 114, containing ball plungers 108 reciprocated by cam surface in a control ring 122. The pump is supplied by a pipe 104 and delivers fluid through kidneyshaped ports in the control ring 122 to a pump pressure chamber 106 leading through passages 172, 180, 182 to a ball relief valve 186. Pump pressure is also supplied from chamber 106 to a land and groove 194, 196, valve controlling the pressure to the pressure chamber 94 of the ratio control servo. Movement of the control ring 122 axially by a shifter fork (not shown) controls admission of fluid to the chamber 94, the valve movement being followed-up by axial movement of the hub 114 to retain pressure equilibrium at the desired ratio. Centrifugal effects on the fluid pressure are balanced by a chamber 214 between the outer race carrier 90 and a flanged member 216 rigid with the hub 114. A second ball pump 260 having a cylinder member rigid with the output shaft and a ball reciprocating cam 278 integral with the output race 58 increases the fluid pressure in passage 182, generated by the first pump and controlled by the relief valve 186 proportionally to the slip between the race 56, integral with the output shaft, the balls 50 and the race 58. This augmented pressure is supplied to a chamber 290 to regulate the loading between the races and the balls to the minimum to provide substantially non-slip working of the gearing. The kidney port plate of the second pump has a lost-motion drive connection such that the loading is maintained during overrun conditions. Lubrication and cooling of the driving surfaces is provided by angled jets between the inner races. Specification 821,860 is referred to.
Patent GB-1072286-A (GB)
Title: Improvements in or relating to motion damping devices
IPC: B60G11/22
Filed: 1965-06-10
Abstract: 1,072,286. Shock absorbers. J. G. POYET. June 10, 1965 [June 13, 1964], No. 24537/65. Heading F2S. A shock absorber comprises a piston 2 working in a cylindrical body 1 between two resilient masses 3, 4. The piston 2 is formed by a washer 6 fixed to the lower end of the piston rod 7 and a further washer 5 slidable on the rod 7, a mass 8 of deformable material being interposed between the washers. A sleeve 11 is adjustably positioned about the rod 7 such that a desired pro-compression may be applied to the mass 8 to force the peripheral wall of the mass against the internal wall of the body 1 and introduce friction damping. A space 4<SP>1</SP> may be left between-the piston 2 and one of the resilient masses. The piston may be lubricated by fabricating the mass 8 of a suitable lubricated material, e.g. graphitized rubber or alternate graphite and rubber washers or by lubricating the walls of the cylinder.
Patent GB-337833-A (GB)
Title: Improvements in or relating to engines, motors, or pumps
IPC: F01B9/06
Filed: 1929-08-10
Abstract: 337,833. Gilbert, W. V. Aug. 10, 1929. Revolving-cylinder pumps. -In an engine or pump the cylinders 1 are mounted on one shaft 3 and the pistons 8 on a second shaft 12, the two shafts being geared together so that in working relative rotation takes place between the cylinder block and the piston block. A pair of pistons are mounted on a common rod 11 by gudgeons 10. The pistons carry rollers 18 which work over a fixed cam 17; this causes the pistons to oscillate on their gudgeons during the rotation of the pistons with their shafts, in order that each piston shall be at the correct angle to enter its corresponding cylinder when it meets it. Springs between lugs 19, 20 on the shaft and piston hold the rollers 18 on the cam. To allow the piston to enter its cylinder readily, it may be in two parts, one 44, Fig. 4, movable with respect to the main body 8, or the cylinder end may be flared or provided with spring guiding flaps. Several sets of cylinders may be mounted on one axle, or several piston pairs may work with one cylinder block. The cylinders and pistons may alternate on each rotating block. The cylinders' or pistons may be stationary, the movable part revolving as a whole about the stationary, rotation of the movable part about its axle being also assured by the gearing.
Patent GB-1386221-A (GB)
Title: Computer memory device
IPC: G11B7/12
Filed: 1973-05-23
Abstract: 1386221 Digital data storage MULTISTATE DEVICES Ltd 23 May 1973 24592/73 Heading G4C A substrate 1 carries a layer 2 of a material exhibiting optical hysteresis such that, at a critical temperature, the optical transmission or reflection characteristics of the material assume a high or low value depending on whether the critical temperature has been reached by heating or cooling the material. As shown substrate 1 is in the form of a rotating disc (though it could be a drum or static plate) in an enclosure 11 maintained at the critical temperature. A laser beam is on-off modulated at 41 and positioned by deflector 43 to select a particular track in a band determined by the position of a galvanometer mirror 45. The laser beam when on heats discrete areas of layer 2 beyond the critical temperature so that when it subsequently cools it retains the low transmission, high reflectivity state. To read the recorded information the laser beam is used at low power (off state of modulator 41) and optionally at a different wavelength to illuminate photodetector 23 by transmission or reflection, Fig. 2 (not shown). A complete band of tracks may be erased by energizing the appropriate one of a plurality of thermoelectric cooling devices 57. Clock marks on the edge of the disc may be sensed by a photodetector 55. The memory material may be VO 2 , V 2 O 3 , Ag 2 S or Cu 2 HgI 4  for example with a thickness between 1000 and 4000 A. A much greater packing density is possible compared with magnetic discs.
Patent GB-654737-A (GB)
Title: Improvements in and relating to chemically-resistant articles
Inventor: EARP FRANCIS KENNETH
IPC: C08L93/00
Filed: 1948-09-20
Abstract: Chemically-resistant tiles, bricks or similar articles are prepared by casting a mixture of a cashew nut shell-liquid polymer, a chemically-resistant filler, an aldehyde or aldehyde-yielding substance and an alkaline material to give a setting time of at least 4 hours at atmospheric temperature. Suitable cashew nut shell liquid polymers are sold under the names "Epok" (Registered Trade Mark), or Cardolite.  Polymers produced under acid conditions need more alkali to produce the desired setting time than neutral polymers.  Suitable fillers which are generally present in proportions up to 35-60 per cent by weight, are carbon, silica flour, quartz, barytes, fired alumina, asbestos, brick dust, pumice, bentonite, titanium dioxide or kaolin.  Aldehydes mentioned are formaldehyde, paraformaldehyde, acetaldehyde, furfuraldehyde, benzaldehyde, hexamethylenetetramine, or phenol-formaldehyde or ureaformaldehyde condensation products containing excess uncondensed formaldehyde.  The cast articles are subjected to vacuum to remove air bubbles and are removed from the moulds in a flexible rubbery state and hardened by treatment in an oven.
Patent GB-1177697-A (GB)
Title: Substituted Phenazines and preparation thereof
IPC: C07D241/52
Filed: 1967-05-26
Abstract: 1,177,697. Pesticides containing substituted phenazines. CANADIAN PATENTS & DEVELOPMENT Ltd. 26 May, 1967 [3 June, 1966], No. 24675/67. Heading ASE. [Also in Division C2] Compositions effective against bacteria, fungi and yeasts on crop seeds comprise the antibiotic myxin (1-hydroxy-6-methoxyphenazine-5, 10-dioxide) as the active ingredient and are made up in combination with water or aqueous dimethylsulphoxide. Suitable seeds to be treated include barley, wheat, oats, flax, alfalfa and winter rye. The compositions are not injurious to the foliage of soybean or wheat seedlings.
Patent GB-157520-A (GB)
Title: An improved fastening clip and binder for stationery, newspapers, periodicals and the like
IPC: B42F1/06
Filed: 1919-10-09
Abstract: 157,520. Strangward, F. E. Oct. 9, 1919. Clamping-devices. - A clip for bolding papers &c. of the type comprising a piece of sheet metal bent substantially to a U-shape and formed with out-turned corners E to facilitate insertion of the papers, is so shaped as to provide a clearance space B at the back, and depending jaws which may have gripping lips C at the front edges. Tongues or depressions H may be formed in the flat sides G of the clip when in position, so as to provide a permanent binding. Reference has been directed by the Comptroller to Specifications 963/95 and 22195/14, [Class 44, Fastenings, Lock &c.].
Patent GB-1512823-A (GB)
Title: Process and apparatus for wave-setting and treatment of hair
IPC: A01B9/00
Filed: 1975-06-09
Abstract: 1512823 Waving hair L'OREAL 9 June 1975 [10 June 1974] 24715/75 Heading A4V A process for waving hair comprises supporting a lock of hair in a desired configuration, applying super-heated steam to the hair for a period of up to 60 seconds and cooling the hair to ambient temperature, for example by means of a stream of air at ambient temperature, before releasing it. Fig. 1 shows a device in which super-heated steam produced in a vaporizing element 6 into which liquid is pumped from a reservoir 9, is injected through a perforated injector needle 7 into the centre of a curler or wave-setting roller. The vaporizing element comprises a metal body with electrical resistance heaters and a chamber (18), Fig. 3 (not shown) filled with metal shot. In a modification, Figs. 4 to 6 (not shown), the injector needle 7 is surrounded by a protective sleeve (30) which is mounted to slide telescopically against the action of a return spring (31) and which has an enlarged head (34) which is pushed back to expose the steam discharge orifices (8) when the device is inserted into a curler. In each case a fan provides a circulation of cold air through the apparatus to protect the scalp and to cool the hair; in Fig. 1 the air is discharged around the needle while in Fig. 6 (not shown) a slot (29) distributes a flat curtain of cold air. In Fig. 7 (not shown) the super-heated steam escapes through a porous mass (7a) instead of through a needle. In order to protect the scalp, the curlers are advantageously provided with means for spacing a lock of hair wound on the curler from the scalp. Figs. 10 to 16 (not shown) depict suitable such curlers. Fig. 8 shows a curling tongs in which a fan 4 passes a stream of air inside the body of the apparatus and steam is produced in a vaporizing element 45 consisting of a porous body, a resistance heater 21 and a vaporizing chamber 46. The liquid to be vaporized is contained under pressure in a cartridge 44 and when a pushbutton 43 is pressed, a valve 53 opens so that gas under pressure expels liquid into the chamber 46 where it is converted to superheated steam. Fig. 18 (not shown) depicts another type of curling tongs. Other embodiments of apparatus for injecting super-heated steam into curlers are illustrated in Figs. 17, 19 and 20 (not shown). In these embodiments, the liquid reservoir is made of a flexible material and can be disposable.
Patent GB-651368-A (GB)
Title: Process for the manufacture of diarylalkanes and their use as antioxidants
IPC: C08K5/13
Filed: 1948-09-22
Abstract: A mixture of 50-80 per cent of 2 : 4-dimethylphenol and 50-20 per cent of 2 : 5-dimethylphenol is heated with an aliphatic aldehyde having 8-12 carbon atoms and an acid condensing agent to give a mixture of the di-(dimethylhydroxyphenyl)-alkanes.  Preferably 60-75 per cent of the 2 : 4-dimethylphenol is used.  In the examples, mixtures of 2 : 4- and 2 : 5-dimethylphenols are reacted with (1 and 4)-b  : d  : d -trimethylhexanal; (2) a -ethylhexanal, and (3) dodecanal.  b  : d  : d  - Trimethylhexanal is prepared from di-isobutylene by treatment with carbon monoxide and hydrogen.ALSO:The mixture of 1 : 1-di-(dimethyl hydroxyphenyl)-alkanes resulting from the reaction of an aliphatic aldehyde of 8-12 carbon atoms with a mixture of 50-80 per cent of 2 : 4-dimethylphenol and 50-20 per cent of 2 : 5-dimethylphenol is used as an antioxidant for vulcanized rubber.  In the examples, the compounds obtained as above when the aldehyde is b  : d  : d  - trimethylhexanal, a  - ethylhexanal, and dodecanal, are used in the vulcanization of pale crepe rubber in presence of zinc oxide, blanc fixe, titanium dioxide, stearic acid, and either zinc diethyldithiocarbamate or tetramethylthiuram monosulphide.  The products are aged at 70 DEG  C. in the presence of absence of oxygen pressure, and also exposed to ultraviolet light.
Patent GB-1285708-A (GB)
Title: Semi-conductor devices
Inventor: GOODMAN DENNIS GEORGE
IPC: H01L21/00
Filed: 1968-10-28
Abstract: 1285708 Semi-conductor devices JOSEPH LUCAS (INDUSTRIES) Ltd 2 Oct 1969 [28 Oct 1968 16 May 1969] 5l035/68 and 24991/69 Heading HlK A plurality of similar semi-conductor devices are manufactured from one wafer by channelling the wafer, positioned on a support, and protecting the exposed regions of the devices with a curable compound prior to curing the compound and separating the devices. The wafer is formed with a P-N junction by known diffusion techniques and a metal deposited on its surfaces. The wafer is secured to a slide 11 by a layer 12 of wax, and a second layer of wax sprayed on to the other side of the wafer through a steel mask containing a plurality of rectangular apertures, forming rectangular areas 13 of wax on the wafer. The wafer is etched to remove the material lying between the areas 13 causing channels 14 to be formed through the wafer. The wafer is washed and dried and a solution of 5% silicone resin, a catalyst, and a volatile carrier, poured into the channels. The wafer is warmed to remove the carrier and heated to cure the resin which forms a protective adherent film 17 on the edges 16 of the devices 15. The wax is removed with a solvent and leads soldered to the metal areas on each device. The silicone resin may be of the form where R is the methyl group, or where R is an aryl or alkyl grouping phenyl or methyl being preferred respectively, or a mixture of the two forms. The catalyst may be zinc acetate, and the carrier alcohol or ketone. In a second embodiment, also described in Specification 1,285,709, a silicon-base crosslinked synthetic rubber material, in liquid form, may be poured into the channels and cured. The wax is removed leaving a plurality of devices interconnected by a rubber membrane.
Patent GB-712675-A (GB)
Title: Rotary hearth furnaces
IPC: F27B9/16
Filed: 1952-10-06
Abstract: 712,675. Rotary hearth furnaces. DAUCH, A. DE C. Oct. 6, 1952, No. 25008/52. Class 51 (2) A rotary hearth furnace for heating steel billets comprises a charging and discharging section of maximum roof height associated with a chimney 10 and with a discharging door 9 separated from a charging door 8 by -a baffle 4 extending from the roof 3 for substantially the full height of the section, a preheating section formed with a low roof 11 extending from the chimney 10 in the direction of the hearth movement, and a heating section longer than the preheating section having a roof height between that of the roofs 3 and 11 and formed with dependent baffles 5, 6 and 7 of increasing height in the direction of hearth movement. Tangentially disposed gas burners 17 and 18 are situated on the entry side of the baffle 7, Fig. 2, and radially disposed burners 19 on the exit side of said baffle. The opening 13 below the baffle 4 is said to be such that a positive pressure is maintained at the discharge door 9 to prevent the ingress of cold air.
Patent GB-1330251-A (GB)
Title: Thyristor switch-arrangement
IPC: H05B41/32
Filed: 1971-04-19
Abstract: 1330251 Electronic flash control PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1971 [26 March 1970] 25027/71 Heading G2A [Also in Division H3] In a switch-arrangement including a first thyristor 3 connected in series with an electronic flash tube 2 across a direct voltage source, the first thyristor 3 may be turned off by the charged condition of a first capacitor 6 in a branch circuit which includes in series the first capacitor 6, a second thyristor 9, and the parallel connection of a second capacitor 10 and a resistor 11. The commutation capacitor 6 is charged via 4, 5, 7 and 8. Simultaneous pulses to the control electrodes, of an electronic flash tube 2 and the thyristor 3 cause capacitor 1 to discharge across the tube 2 which provides a flash such as for taking photographs. The duration of the flash is determined by the light reflected from an object onto a photo-sensitive cell in the control circuit of thyristor 9 which triggers this thyristor. Current now flows via capacitor 6, thyristor 9 and capacitor 10 so that thyristor 3 is turned off. Capacitor 10 which has become slightly charged continues to charge via 2, 6, 12 and 9 after thyristor 3 is blocked so that a negative voltage occurs at the anode of thyristor 3 during its recovery time. The capacitor of capacitor 10 may be smaller than that of capacitor 6 or may be larger than that of capacitor 6 to prevent it recharging.
Patent GB-298355-A (GB)
Title: Machines for casting molten metals
IPC: B22D17/22
Filed: 1927-09-22
Abstract: 298,355. Travis, I. D. Sept. 22, 1927. Moulds; clamping and guiding moulds.-Mould halves 1, 2 are pivoted to a frame B so that they can be tilted, when the mould is opened, to facilitate cleaning or insertion of cores. The mould half 1 is notched at 3a to receive the ends of a yoke F which can be moved along guides 4, 5 of the frame B by a cylinder A. Pivots 3 of the mould 1 engage holes in the yoke and the recesses 3a are shaped to allow tilting while assisting to support the mould by bearing on the top of the yoke. When in the vertical position the mould is locked by a pin 11 passing through holes in projections 8 of the mould 1 and in the yoke. The mould 2 is similarly mounted on the ends of the guides 4, 5 which are provided with projections 16, 17 adapted to support the mould 2 in both positions. Castings, extracting.-Ejectors 20 carried by a spring-pressed plate 21 are operated by slotted links 10, which engage pins 9 on the projections 8, when the mould 1 is fully withdrawn. In large castings or when casting balls the number of ejectors 20 may be increased.
Patent GB-483631-A (GB)
Title: Improvements in or relating to lamps
IPC: F21V15/04
Filed: 1937-09-15
Abstract: 483,631. Vehicle &c. lamps. FLEXIBLE LAMPS, Ltd., and BOWER, E. P. A. Sept. 15, 1937, No. 25066. [Class 75 (iv)] In a vehicle or like lamp of the kind in which the whole of the body A or at least that part thereof carrying the lens C is made of rubber or like resilient material, the lens C is held in an annular groove B by an internally projecting flange B<1> and there is provided a forwardly directed flange D which can be expanded and rolled back when it is desired to remove the lens, this rolled-back flange springing into and being, as shown in Fig. 2, retained in a recess E formed in the lamp body. In a modification, as applied to a lamp of large size, such as a vehicle headlamp, one or more radial slits are provided in the flange D, unintentional opening out of which is prevented by a spring housed in an external circumferential groove in the flange.